SMPP 3.4 Protocol Specification Archive

Posted by on Mar 2, 2009 in Support Blog

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For archive purposes, I’m posting a copy of the SMPP 3.4 Specification here.

The SMS standards organization that created the specification has disbanded, and there are plans for their web site to be shut down.

This doesn’t mean that SMPP is not still important for SMS. It remains the de-facto standard for application based SMS messaging.

It’s just that the SMPP v3.4 specification was published in 1999, and it really hasn’t been updated since.

The group did produce a successor specification, SMPP v5.0 … but it was too overwhelming, and never really caught on in the marketplace. This leaves SMPP v3.4 as the de-facto industry standard.


Download links:

SMPP v3.4 Protocol Specification

SMPP v3.3 Protocol Specification

Those specifications are a good reference for developers.

Those are good SMPP references for developers.

It’s probably also a good idea to archive some reference information here for SMPP issues as they relate to NowSMS:

Garbage When Sending Text Messages longer than 160 Characters

SMPP TON and NPI Settings

Optional SMPP TLV Parameters for mBlox and other SMS Providers

SMPP Connection Types (Sender, Receiver, Transceiver)

Limiting the Speed of an SMPP Connection

SMPP Error Code Handling and Retries


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